EP0012632A1 - Kompression und Expansion (Quantizierung) von digitalen differenzcodierten Fernsehsignalen - Google Patents

Kompression und Expansion (Quantizierung) von digitalen differenzcodierten Fernsehsignalen Download PDF

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Publication number
EP0012632A1
EP0012632A1 EP79400067A EP79400067A EP0012632A1 EP 0012632 A1 EP0012632 A1 EP 0012632A1 EP 79400067 A EP79400067 A EP 79400067A EP 79400067 A EP79400067 A EP 79400067A EP 0012632 A1 EP0012632 A1 EP 0012632A1
Authority
EP
European Patent Office
Prior art keywords
prediction
quantization
values
compression
expansion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP79400067A
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English (en)
French (fr)
Inventor
Francis Kretz
Jean-Louis Boudeville
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telediffusion de France ets Public de Diffusion
Original Assignee
Telediffusion de France ets Public de Diffusion
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telediffusion de France ets Public de Diffusion filed Critical Telediffusion de France ets Public de Diffusion
Priority to DE8282105354T priority Critical patent/DE2967493D1/de
Publication of EP0012632A1 publication Critical patent/EP0012632A1/de
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding

Definitions

  • the present invention relates to compression and expansion of digital differential coding television signals.
  • table I it is assumed that a MIC coding of the signal to be coded comprising 8 binary elements is used, with the positive convention, where the extreme white is coded 255 and the extreme black 0.
  • a value of d n therefore corresponds in the MICD coding, a luminance value X n greater than the prediction value P d , ie a point whiter than what the prediction value would predict.
  • a negative d n value corresponds to a darker point than expected.
  • the movable contact of 14 is connected, on the one hand, to the transmission member 4 and, on the other hand, to the input of the converter 5 whose output is connected to the input of the predictor 6 whose output is connected to the second input of 1.
  • all of circuits 11 to 14 replace circuit 3.
  • zones Z i to Z k juxtaposed overlapping the axis DB PARALLELO g ram ABCD, whose sides represent the theoretical limits of the prediction error d X n - P as a function of P. In practice, these limits are never reached and the values of d n , in each zone Z i , can be limited to lower values in absolute value, such as and . As shown in Fig. 6a, the zones Z i are of variable width and the extreme levels and . are also variable. It will also be noted that the different reconstruction levels and thresholds in the zones do not coincide from one zone to the adjacent zone.
  • the television image signal applied to the input 18 is in digital form X n and is delivered by a conventional encoder MIC, not shown.
  • the subtractor 17 makes the difference d n between the digital signal X and a digital prediction signal P delivered by the predictor 24.
  • the quantizer circuit 19 can be constituted by a coding read-only memory in which the values d n are considered as addresses
  • the encoder of FIG. 8 constitutes a variant of that of FIG. 7 and also includes circuits 17, 19, 20, 21, 24 and 25 operating as in the coder of FIG. 7.
  • the circuits 22 and 23 are replaced by two circuits 26 and 27.
  • the circuit 26 has its signal input connected to the output of 17 and its signal output connected to the signal input of circuit 27 whose output is connected at the input of predictor 24.
  • the control input of circuit 27 is connected to the output of the zone encoder 25.
  • Circuit 26 is an encoder which delivers, depending on the digital signal d n which is applied to it, another digital signal by following a correspondence table which, for example, may be that of table Ia.
  • the circuit 26 can be a read only memory in which at the addresses d n the digital values of the signals are directly recorded. .
  • Circuit 27 is a limiter which limits the values to positive extreme values . and negative defined as a function of i according to table Ib, and which therefore delivers a digital signal d, identical to that delivered by 23 in FIG. 7.
  • circuit 27 can also be a read-only memory containing the values and , associated with two logical comparators.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
EP79400067A 1978-12-08 1979-02-01 Kompression und Expansion (Quantizierung) von digitalen differenzcodierten Fernsehsignalen Withdrawn EP0012632A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8282105354T DE2967493D1 (en) 1978-12-08 1979-02-01 Compression and expansion (quantification) of digital differentially encoded television signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7835485A FR2443769A2 (fr) 1978-12-08 1978-12-08 Compression et expansion (quantification) de signaux numeriques de television a codage differentiel
FR7835485 1978-12-08

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP82105354.3 Division-Into 1979-02-01

Publications (1)

Publication Number Publication Date
EP0012632A1 true EP0012632A1 (de) 1980-06-25

Family

ID=9216223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400067A Withdrawn EP0012632A1 (de) 1978-12-08 1979-02-01 Kompression und Expansion (Quantizierung) von digitalen differenzcodierten Fernsehsignalen

Country Status (5)

Country Link
US (1) US4292651A (de)
EP (1) EP0012632A1 (de)
JP (1) JPS5580977A (de)
CA (1) CA1142639A (de)
FR (1) FR2443769A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049271A1 (de) * 1980-04-08 1982-04-14 Western Electric Co Prädiktionssignalcodierung mit teilquantisierung.
FR2515450A1 (fr) * 1981-10-27 1983-04-29 Thomson Csf Procede, et systeme, de codage et decodage differentiel de donnees limitant la propagation des erreurs de transmission
EP0091979A1 (de) * 1982-04-20 1983-10-26 Waldemar Dipl.-Ing. Kehler Bereichsprädiktives Code-Modulationsverfahren mit signaladaptiv reduzierter bit-Rate
WO1983003727A1 (fr) * 1982-04-20 1983-10-27 Waldemar Kehler Procede de modulation et codage, a prediction de plage, avec taux de bits reduit adapte au signal
FR2532138A1 (fr) * 1982-08-20 1984-02-24 Thomson Csf Procede de compression de debit de donnees successivement transmises entre un emetteur et un recepteur de television et systeme mettant en oeuvre le procede

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Publication number Priority date Publication date Assignee Title
JPS56136093A (en) * 1980-03-26 1981-10-23 Fuji Photo Film Co Ltd Adaptive quantizer
NL8005950A (nl) * 1980-10-30 1982-05-17 Philips Nv Differentieel pulscode modulatie overdrachtstelsel.
US4554670A (en) * 1982-04-14 1985-11-19 Nec Corporation System and method for ADPCM transmission of speech or like signals
IT1155557B (it) * 1982-07-19 1987-01-28 Cselt Centro Studi Lab Telecom Metdodo e dispositivo per la codifica del segnale d immagine con riduzione di ridondanza a distorsione localmente uniforme
NL8203950A (nl) * 1982-10-13 1984-05-01 Philips Nv Differentieel pulscodemodulatie overdrachtstelsel.
DE3331426A1 (de) * 1983-08-31 1985-03-14 Siemens AG, 1000 Berlin und 8000 München Anordnung zur zweidimensionalen dpcm-codierung
US4571736A (en) * 1983-10-31 1986-02-18 University Of Southwestern Louisiana Digital communication system employing differential coding and sample robbing
SE465347B (sv) * 1984-04-25 1991-08-26 Matsushita Electric Works Ltd Bildsaendningssystem foer sampling och komprimering av bilddata i ett tv-bildfaelt
CA1292071C (en) * 1985-06-28 1991-11-12 Tomohiko Taniguchi Coding transmission equipment for carrying out coding with adaptive quantization
US4665436A (en) * 1985-12-20 1987-05-12 Osborne Joseph A Narrow bandwidth signal transmission
FR2594612B1 (fr) * 1986-02-14 1991-05-31 Labo Electronique Physique Circuit de decodage d'echantillons numeriques en micd
DE3605032A1 (de) * 1986-02-18 1987-08-20 Thomson Brandt Gmbh Verfahren zur digitalen nachrichtenuebertragung
US4725885A (en) * 1986-12-22 1988-02-16 International Business Machines Corporation Adaptive graylevel image compression system
US4853969A (en) * 1987-01-13 1989-08-01 Recognition Equipment Incorporated Quantized digital filter
US4742391A (en) * 1987-01-16 1988-05-03 Cubic Corporation DPCM video signal compression and transmission system and method
GB2203012B (en) * 1987-03-30 1991-02-20 Sony Corp Differential pulse code modulation
JP2826321B2 (ja) * 1988-07-23 1998-11-18 日本電気株式会社 直交変換符号化装置
US5107519A (en) * 1988-11-17 1992-04-21 Canon Kabushiki Kaisha Coding device and a decoding device
JP3191457B2 (ja) * 1992-10-31 2001-07-23 ソニー株式会社 高能率符号化装置、ノイズスペクトル変更装置及び方法
IT1272417B (it) * 1993-04-29 1997-06-23 Alcatel Italia Metodo per la codifica e decodifica differenziale e relativi circuiti
US5715009A (en) 1994-03-29 1998-02-03 Sony Corporation Picture signal transmitting method and apparatus
CA2265089C (en) * 1998-03-10 2007-07-10 Sony Corporation Transcoding system using encoding history information
EP1069779B1 (de) * 1999-02-09 2016-04-13 Sony Corporation Kodiersystem und entsprechendes verfahren
US6934417B2 (en) * 2000-12-22 2005-08-23 Texas Instruments Incorporated Transcoding scheme for assistance in image transformations
JP4196726B2 (ja) * 2003-05-14 2008-12-17 ソニー株式会社 画像処理装置および画像処理方法、記録媒体、並びに、プログラム
MX2019008140A (es) 2017-01-06 2019-09-13 Monsanto Technology Llc Dispositivo y metodo para polinizar plantas.

Citations (3)

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DE2124060A1 (de) * 1970-05-18 1971-11-25 Fujitsu Ltd Nichtlineares Codiersystem
DE2643761A1 (de) * 1976-09-29 1978-04-06 Licentia Gmbh Verfahren zur binaeren darstellung von analog-signalen
FR2408945A1 (fr) * 1977-08-26 1979-06-08 Telediffusion Fse Compression et expansion (quantification) de signaux numeriques de television a codage differentiel

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US3151296A (en) * 1962-12-13 1964-09-29 Douglas L Phyfe Method and system for transmission of companded pulse code modulated information
US3354267A (en) * 1965-01-13 1967-11-21 Bell Telephone Labor Inc Differential pcm system employing digital integration
US3403226A (en) * 1965-09-30 1968-09-24 Bell Telephone Labor Inc Reduced bandwidth dual mode encoding of video signals
US3662266A (en) * 1970-05-18 1972-05-09 Bell Telephone Labor Inc Nonlinearly sampled differential quantizer for variable length encoding
US3707680A (en) * 1970-05-20 1972-12-26 Communications Satellite Corp Digital differential pulse code modulation system
US3781685A (en) * 1972-11-13 1973-12-25 Bell Telephone Labor Inc Differential pulse code communications system having dual quantization schemes
JPS49123561A (de) * 1973-03-30 1974-11-26
US4093962A (en) * 1976-12-01 1978-06-06 Nippon Electric Co., Ltd. Adaptive predictive encoder
DE2740945C3 (de) * 1977-09-10 1982-02-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Übertragen von Bildsignalen mit Hilfe der Differenz-Puls-Code-Modulation (DPCM) und geste uertem Quantisierer

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Publication number Priority date Publication date Assignee Title
DE2124060A1 (de) * 1970-05-18 1971-11-25 Fujitsu Ltd Nichtlineares Codiersystem
DE2643761A1 (de) * 1976-09-29 1978-04-06 Licentia Gmbh Verfahren zur binaeren darstellung von analog-signalen
FR2408945A1 (fr) * 1977-08-26 1979-06-08 Telediffusion Fse Compression et expansion (quantification) de signaux numeriques de television a codage differentiel

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
INTERNATIONALE ELEKTRONISCHE RUNDSCHAU, vol. 27, no. 1, janvier 1973, Berlin (DE), R. KERSTEN et W. DIETZ: "Experimente zur Nachrichtenreduktion bei Bildfernsprechsignalen", pages 8-12. *
RADIO MENTOR ELECTRONIC, vol. 39, no. 1, janvier 1973, page 28, M}nich (DE), B. WENDLAND et F. MAY: "Ein adaptiver intra-frame Codierer f}r Fernsehsignale". Figure 9d. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049271A1 (de) * 1980-04-08 1982-04-14 Western Electric Co Prädiktionssignalcodierung mit teilquantisierung.
EP0049271A4 (de) * 1980-04-08 1983-12-09 Western Electric Co Prädiktionssignalcodierung mit teilquantisierung.
FR2515450A1 (fr) * 1981-10-27 1983-04-29 Thomson Csf Procede, et systeme, de codage et decodage differentiel de donnees limitant la propagation des erreurs de transmission
EP0078195A1 (de) * 1981-10-27 1983-05-04 Thomson-Csf Verfahren und System zur differentiellen Kodierung und Dekodierung von Daten mit Begrenzung der Fortpflanzung von Übertragungsfehlern
EP0091979A1 (de) * 1982-04-20 1983-10-26 Waldemar Dipl.-Ing. Kehler Bereichsprädiktives Code-Modulationsverfahren mit signaladaptiv reduzierter bit-Rate
WO1983003727A1 (fr) * 1982-04-20 1983-10-27 Waldemar Kehler Procede de modulation et codage, a prediction de plage, avec taux de bits reduit adapte au signal
FR2532138A1 (fr) * 1982-08-20 1984-02-24 Thomson Csf Procede de compression de debit de donnees successivement transmises entre un emetteur et un recepteur de television et systeme mettant en oeuvre le procede
EP0104963A1 (de) * 1982-08-20 1984-04-04 Thomson-Csf Verfahren zur Datenflussreduzierung von nacheinander zwischen einem Fernsehsender und -empfänger übertragenen Daten und System zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
FR2443769A2 (fr) 1980-07-04
FR2443769B2 (de) 1981-02-06
US4292651A (en) 1981-09-29
CA1142639A (en) 1983-03-08
JPS5580977A (en) 1980-06-18

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Inventor name: BOUDEVILLE, JEAN-LOUIS

Inventor name: KRETZ, FRANCIS